<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
	</head>
	<style>
/* 下拉按钮样式 */
.dropbtn {
    background-color: #4CAF50;
    color: white;
    padding: 16px;
    font-size: 16px;
    border: none;
    cursor: pointer;
}

/* 容器 <div> - 需要定位下拉内容 */
.dropdown {
    position: relative;
    display: inline-block;
}

/* 下拉内容 (默认隐藏) */
.dropdown-content {
    display: none;
    position: absolute;
    background-color: #f9f9f9;
    min-width: 160px;
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
}

/* 下拉菜单的链接 */
.dropdown-content a {
    color: black;
    padding: 12px 16px;
    text-decoration: none;
    display: block;
}

/* 鼠标移上去后修改下拉菜单链接颜色 */
.dropdown-content a:hover {
	background-color: #f1f1f1;
	
	}

/* 在鼠标移上去后显示下拉菜单 */
.dropdown:hover .dropdown-content {
    display: block;
    border: 2px solid #000000;
}

/* 当下拉内容显示后修改下拉按钮的背景颜色 */
.dropdown:hover .dropbtn {
	
    background-color: #3e8e41;
    border: 2px solid #000000;
}
</style>
	<body>
		<div class="dropdown">
  <button class="dropbtn">下拉菜单</button>
  <div class="dropdown-content">
     <img src="img/1466134037230.jpg"/><a href="#">菜鸟教程 11111</a>
    <a href="#">菜鸟教程 2</a>
    <a href="#">菜鸟教程 3</a>
  </div>
</div>
	</body>
</html>
